... double Gauss objective 双高斯物镜 double mirror 双反射镜 double objective 双凸物镜 ...
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双[反射]镜消像散镜 two mirror anastigmat
双反射镜系统 two-mirror system
双反射镜式光电经纬仪 double reflector optical-electronic theodolite
双锥形反射镜 biconial reflector
双面反射镜 double mirror ; double-faced reflector
双曲面反射镜 Hyperboloid Reflector
双透镜反射 twin-lens reflex
实验结果表明，只要有机玻璃管的真空度能够满足要求，采用双反射镜成像系统来观测射流的形貌是可行的。
The experiment results show that observing jet appearance with the double reflecting mirrors system is feasible as long as the vacuum of the glass tube can meet the requirement of experiment.
经推证及试验表明，采用双曲率椭球面反射镜，可以克服上述缺点。
It is shown by proving and testing that the abovementioned shortcomings can be overcome by using the reflecting mirrors with bilateral curvature ellipsoid.
讨论了低通滤波和双二阶网络滤波等几种可以减小倾斜反射镜机械谐振的方法。
The low pass filter (LPF) and the double second rank filter (DSF) are tested to reduce the mechanical oscillation of FSM.
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